Famed educator Maria Montessori once said, “Play is the work of the child”—and most kids take their “work” very seriously. But their avid enthusiasm might also raise the risk of blunt force injuries, particularly to the mouth.

While you should certainly take steps to protect their mouth (like a custom-made guard for contact sports), you can’t completely erase the risk. You should know, therefore, what to do in case of a mouth injury.

The lips, tongue, and other soft oral tissues often get the brunt of any contact injury, ranging from minor bruising and swelling to severe cuts that require medical attention. First, clean the area as thoroughly as possible to remove trapped dirt or debris in the wound. If bleeding occurs, apply continuous gentle pressure with a clean cloth or gauze for 10-15 minutes until it stops, and cold compresses for any swelling. If the wound looks deep or severe, take them to an emergency room.

Blunt force can also impact teeth in a variety of ways. If part of a tooth chips, attempt to find the pieces and see a dentist as soon as possible—they may be able to bond the pieces back to the tooth. If a tooth gets moved out of place, call your dentist immediately or go to an emergency room after hours.

If a permanent tooth gets completely knocked out, find it and rinse off any debris with clean water. Then, place it gently back into its socket, or alternatively between the child’s cheek and gum or in a glass of cold milk. You’ll need to see a dentist as soon as possible to have the tooth replanted. With this kind of injury, time is of the essence.

A hard impact can also fracture the jawbone, which may be suspected if the face appears distorted or the teeth can’t make contact with each other when the jaws are shut. Control any bleeding, apply cold compresses or mild pain relievers to ease any pain or swelling, and go to an emergency room immediately.

A traumatic injury can heighten everyone’s emotions, including yours. You can avoid your emotions turning into panic, though, by following these common sense guidelines to help your child get through this unfortunate event.